Ectopic pregnancy needs to be diagnosed and treated early, and the best time to treat it is immediately after the patient is diagnosed with ectopic pregnancy. Patients with ectopic pregnancy will not only experience symptoms such as menopause, abdominal pain and irregular vaginal bleeding, but also pelvic hemorrhage if the gestational sac ruptures, which may lead to acute and critical illnesses such as blood pressure drop, dizziness, fainting and even shock. Therefore, once a patient is diagnosed with ectopic pregnancy, she should be treated immediately. When the gestational sac of ectopic pregnancy has not ruptured, the blood HCG is less than 2000 U/L and the ectopic pregnancy mass is less than 4 cm, and there is no obvious abdominal pain and vaginal bleeding, the patient can be treated conservatively with drugs; while when the blood HCG is >2000 U/L and the ectopic pregnancy mass is >4 cm, the patient should be hospitalized immediately and undergo laparoscopic surgery. Therefore, when a patient has delayed menstruation for 10 days or more, she needs to go to the hospital promptly for examination to clarify whether she is pregnant and whether the gestational sac is in the uterine cavity. If the gestational sac is not observed in the uterine cavity at this time, regular follow-up blood HCG and ultrasound are needed for early detection of ectopic pregnancy.